Concrete mold



Dec, z3, 1924. 1,520,431

G. A. NOBLE CONCRETE MOLD Filed March 23. 1922 2 sheets-sheet 1 Dec. 23,v 1924.

G. A. NOBLE' CONCRETE MOLD Filed March v23, 1922 2 Sheets-Sheet 2 Patented @en Z3,

GEORGE A. TQBLE, OF MARZSVILLE, CALIFORNIA.

CONCRETE MOLD.

Application filed March 23, 1922. Serial No. 545,961.

To all whom t may concer/n.:

Be it known that l, Grenen A. NOBLE, a citizen of the United States, residing at Marysville, county of Yuba, and State of California, have invented new and useful improvements in Concrete Molds, of which the following is a specification.

This invention relates to concrete molds, such as employed in the erection of walls. buildings and like structures, and especially to a sectional, separable type of mold adapted for hollow wall structures.

Practically all hollow concrete walls and building structures in use today are built up of individually cast hollow concrete blocks. or by temporary wooden framesr or molds into which the concrete is poured. Either method or system of construction is almost prohibitive when cost is considered, due to the amount of time and labor required and waste 0f lumber as the lumber employed for this purpose can seldom be re-used.

The present invention embodies a. metal structure by which cost may be considerably lowered; time losses materially decreased, and a rigid hollow wall structure economically obtained. rl`he objects are, to provide an improved and simplified form of mold; ai mold which is sectional and which may be readily assembled or removed with relation to the structure; a mold which is permanent and capable of indefinite re-use; a mold which is designed to be raised vertically as the work progresses so that the wall or structure may be cast or poured in as many successive courses as required; and further to provide a temporary frame structure which may be entirely removed when the wall or building is completed, and which will serve as a guide and a` partial support for the molds during erection. Other objects will hereinafter appear.

The invention consists of the parts and the construction, combination and arrangement of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Fig. l is a plan view of a hollow concrete wall under construction.

Fig. 2 is a cross section of the wall showing the molds in position.

Fig. 8 is a side elevation of the type of spreader employed.

Fig. 5 is an enlarged detail View of the spreader.

Fig. 4 is a cross section on line 4 4, Fig. 5.

Fig. 6 is a perspective view of the channel shaped cap employed in connection with the inner mold.

Fig. 7 is a perspective view of one of the clamps employed.

Fig. 8 is a perspective view of one of the spacing blocks employed.

Referring to the drawings in detail, and particularly to Figs. l and 2, A indicates a base or foundation section and B a hollow concrete wall supported thereby. This wall, by referring to Figs. l and 2, consists of an outer section 2, a central space or passage 3, and an inner section 4. The inner and outer sections may be cross-tied at intervals, as will hereinafter be described.

The form of mold employed during the erection of the wall structure consists of outer forms or plates such as shown at 5 and 6, and a set of inner forms or plates 7 and 8. rlhe outer mold sections 5 and 6 are f in reality nothing more or less than rectangular shaped forms built up of lumber, as shown in F ig. 2, and then placed against the inner and outer sides of the wall where they are held by frame-work hereinafter to be described, and clamps such as generally indicated in Fig. 7. The inner mold is preferably constructed of metal throughout. As previously stated it consists of a pair of inner forms or plates 7 and 8 which may be constructed of fairly heavy sheet iron or the like. These plates are preferably rectangular in shape and may be of any size desired. The plates must be separated and held apart when placed in position on the wall structure and this is accomplished by means of spreaders such as generally indicated in Figs. 3, l and 5. The spreaders are arranged in pairs and consist of angle iron bars 9 and 10 connected by links 11 and l2 to a central draw-bar or rod 13, in the upper end of which is formed an eye le by which it may be conveniently engaged. The angle bars 9 and 10 have pro-4 jecting wings and the links 11 and 12, as arranged, form spreaders or toggle links, that is an upward pull on the draw bar, through means of the eye 14, will cause the angle bars 9 and 10 to approach each other, while a downward movement or push on the drawbar will cause a spreading action.

To illustrate the use of the molds, and

indicated at 1, 2, 3, and 4, in Fig. 2.

that the molds may be removed and raised to the elevated position shown in the same figure. This is accomplished by removing the clamp generally indicated in Fig. 7. This clamp consists of apair of legs 1T and 18, which are connected by spreader arms 19 and 20. The leg 17 is hingedly secured to the arm .19, as at21, while arm 20 is provided with side braces, which are extended as at22, to form guides for the lower' end of the leg 17. The legs 17 and 18 are drawn together when the clamp is ei'nployed by means of a rod 23, which is threaded to receive'a clamping nut 24. A suitable number of clamps of this character are employed as indicated at C, D and Fi, when the lmolds are in position on a wall, as shown in Fig. 1. yEach one is of course released and removed when the mold sections are to be elevated.' After removal of the clamps, it can be readily seen that the mold sect-ions 5 and 6 may be stripped from the inner and outer surfaces ofthe wall and that they may be raised to the position shown in Fig. 2; the inner mold sections 7 and 8 being similarly released by drawing upward on the draw bars. To support the inner mold sections 7 and 8, which are in realit nothin@ more or less than larOe rectangular shaped sheetdron plates, one or morecross bars, which are short sections of channel iron, such as indicated at 25, see Fig. 2, are placed on top of the wall section last cast. The sheet iron plates 7 and 8 are thenplaced on top of these cross bars and are thus secured against downward movement into the hollow space 3 formed between the wall sections. The exterior mold plates or forms 5 and 6 are then placed in position and the clamps applied, after which they are drawn tightly together by means of the rods 23 andnuts 24. The exterior mold sections are so ylong that they will slightly overlap the wall as indicated at 27 and 28, and will thus bite or tightly engage the'wall atvthis point and .downward movement is thus" prevented. It is also necessary to maintain a proper spacing between the upper ends of the mold sections and between the said .mold sections and the inner sheet iron mold sections.` Such spacing is obtained by inserting'spacer bars 30 as shown in Fig. 8. Insertion of the spreaders', such as shown in Figs. 3, 4 and 5, willinsure perfect 4.positioning and spacing of the innermolds. A cap or channel shaped plate such ias shown at 31, see Fig. 6, is finally placed on top of the inner mold sections and the concrete may their be poured into the spaces indicated at 32 and 33, see Fig. 2, until `the spaces have been completely filled. rIhe concrete will then remain until partially set, when the clamps may again be removed and the molds stripped from their respective surfaces, after which they may again be elevated and the structure carried to any height desired.

By referring to Fig. 1 it will be noted that a temporary frame structure is employed in connection with the exterior molds 5 and 6. The exterior frame in reality is nothing more or y less than vertically dis posed studs, as indicated at 40q 41, 42 `and, 43. The typeof stud indicated at 40 is employed at all interior corner intersections; the type of stud illustrated at 41, where flush or parallel surfaces are encounA tered, and the type of stud 43 is employed at all exterior corner sections. By referring to the several types of studs employed, .it will be noted that they arefallfnotched or channeled to receive the exterior mold sections 5 and 6, and they thus form vertical guides for the same, which maintains such alignment as required. Where window or door framesare required, it is only necesi sary to insert them between the exterior mold lsections as the work is proceeding; a type of window frame conveniently em'- ployed being that indicated at 50, and a suitable type of door frame that indicated at 60. These features however form no particular' part of the present invention and they are therefore merely incidentally disclosed. Y y v The present invention involves several im'- portant features, first of all, it can' be seen' that the spreaders illustrated in Figs. 3, 4 and 5 are constructed of metal throughout and as such may be subjected to a great deal of wear andr abuse without danger of destruction. The inner mold plates or forms are preferably constructed of sheet iron and as such should also be indestructible. The exterior molds or plates 5 and 6, while here illustrated as constructed of lumber,l may also be formed of metal sheets, if desired, or they may be lined with galvanized 'iron' where conditions may demand. The molds are therefore -permanent and may be used over and over, not'only on one building, but where a series of/building's are to lbe erected. This is of great importance as it materially reduces the genera-l 'cost of construction when comparison is made with many structures erected today where wo'od forms are employed, and where the lumber must be stripped off and thrown away when the work is completed. I

The clamps generally indicated in Figl '7 are of the permanent type, vas are also the studs shown at 40, 41, 42 and 43. y These studs may be constructed of a fair grade of lumber and may be oiled or otherwise lie treated to render them as permenent as possible. rlhey may therefore also be ire-used on one job or building after another. rlhe use of these studs is an important feature of the present invention as it provides a partial support and guide for the molds, and above all insures perfect alignment of the same during the entire building operation. rlhe studs may be pressed or tied together in any suitable manner, not here shown. All parts are used over and over again, thereby eliminating waste, and as the molds mav be quickly and readily assembled or stripped with relation to the work, it is obvious that practically little time and labor will be required for this purpose, thus further increasing the economy of such structures.

lVhile certain features of the present invention are more or less specifically illustrated, wish it understood that various changes in form and proportion may be resorted to within the scope of the appended claims, similarly that the materials and finish of the several parts employed may be such as the experience and judgment of the manufacturer may dictate or various uses may demand.

Having thus described my invention, what I claim and desire to secure by Letters Patent is l. A mold for constructing hollow concrete walls, said mold comprising inner and outer rectangular shaped plate-like forms, cross bars having shoulders formed thereon engageable with the inner and outer mold plates to maintain a predetermined spacing between tne same, spreader members interposed between the inner forms, clamping members engaging the exterior forms, vertical guides for the outer forms in which said forms are vertically movable, and means on the clamps supporting the clamps and outer forms with relation to the inner forms.

2. A mold for use in constructing hollow concrete walls, said mold comprising rectangular shaped plate-like forms, and said forms comprising an outer pair and an in termediate pair of forms, means on the wall structure proper for supporting the intermediate forms, spreader members interposed between the inner forms and maintaining a. predetermined spacing between the same, spacing bars interposed between the inten mediate forms and the outer forms and maintaining a predetermined spacing between the same, lll-shaped clamping members engageable with the exterior forms and clamping rods passing through the U-shaped clamps to tighten the same, said rods en gaging the intermediate forms and supporting the exterior forms and the clamps with relation thereto.

3. A mold for constructing hollow concrete walls, said mold comprising inner and outer plates and clamps each clamp composed of vertical legs engaging the outer plates, horizontal arms arranged at the upper ends of the legs and at an intermediate point and rigidly secured to one of the legs, the other leg being hinged at its upper end to the top arm, a guide carried by the other arm and receiving the hinged leg and an adjusting rod connecting the legs and arranged below the arms and arranged to rest upon the said plates for supporting the clamp in position.

4;, A mold for constructing hollow concrete walls, said mold comprising inner and outer plates and clamps each clamp comprising vertical legs engaging the outer plates, spaced horizontal arms located at the upper ends of the legs and at an intermediate point and rigidly secured to one of the legs, the other leg being hinged at its upper end to the top arm, side braces arranged at the side faces of the other arm and secured to the same and to one of the legs and projecting beyond the said arm and forming a guide for the hinged leg and an adjusting rod located beneath the arms and connecting the legs and arranged to rest upon the said plates for supporting the clamp.

GEORGE A. NOBLE. 

